Always look on the bright side of life
American Pie Star Wars
La Resistance (south park movie)
Philosopher drinking song (Monty Python: Live at hollywood bowl)
(BTW: I put those on an infinite loop sometimes: great fun )

Every Sperm is sacred
The space song (that funky thing from Monty Python's meaning of life)

http://politicalhumor.about.com/b/a/059035.htm
These have to be my favorite songs.....
But that one about the mexican is cool... or the one about the fat kid who can't fit through the door to the brothel because he has a two by four stuck in his culo or something! That is hillarious.